<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<style>
  li{
    width: 30px;
    height: 30px;
    float: left;
    list-style: none;
    text-align: center;
    line-height: 30px;
    border: 1px solid green;
    border-radius:50%;
    margin: 10px;
    transition: all 0.6s;
    cursor: pointer;
  }
  li:hover{

    transform: scale(1.3);
  }
</style>
<body>
<ul>
  <li>1</li>
  <li>2</li>
  <li>3</li>
  <li>4</li>
  <li>5</li>
  <li>6</li>
  <li>7</li>
</ul>
</body>
</html>
